Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:11:07 2012 Optimize a model with 35525 rows, 34782 columns and 140428 nonzeros Presolve removed 21 rows and 3536 columns Presolve time: 0.80s Presolved: 35504 rows, 31246 columns, 136512 nonzeros Variable types: 0 continuous, 31246 integer (31246 binary) Found heuristic solution: objective 186.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 368 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 316 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (667 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%